280823023 has 4 divisors (see below), whose sum is σ = 302424808. Its totient is φ = 259221240.

The previous prime is 280823003. The next prime is 280823027. The reversal of 280823023 is 320328082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320328082 = 2 ⋅160164041.

It is a cyclic number.

It is not a de Polignac number, because 280823023 - 2¹⁷ = 280691951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280822982 and 280823000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280823027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10800873 + ... + 10800898.

It is an arithmetic number, because the mean of its divisors is an integer number (75606202).

Almost surely, 2^280823023 is an apocalyptic number.

280823023 is a deficient number, since it is larger than the sum of its proper divisors (21601785).

280823023 is a wasteful number, since it uses less digits than its factorization.

280823023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21601784.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 280823023 is about 16757.7750014732. The cubic root of 280823023 is about 654.8536261697.

The spelling of 280823023 in words is "two hundred eighty million, eight hundred twenty-three thousand, twenty-three".